Stale data on project page

The content for this page is stale. We should switch to using data from the pmi.

I created a PR which will fetch this data for us: https://github.com/EclipseFdn/iot.eclipse.org/pull/351

Requirements:

1. Create a /projects/projects.json file based off this new yml file. The json file should only include Internet of Things (IoT) projects: https://github.com/EclipseFdn/iot.eclipse.org/blob/df1f925d4dcdd9132ec5b466683c472816ca86e9/data/eclipsefdn_projects.yaml#L5440

2. Update our js/projects.js script to fetch this new json file

3. remove stale data

In an effort to minimize the work needed here, we could try to generate a json file in the same format that we are currently using for this page: https://github.com/EclipseFdn/iot.eclipse.org/blob/master/static/assets/js/projects.json